<template>
  <div class="login-container">
    <!-- 导航栏 -->
    <van-nav-bar id="page-nav-bar" title="登录" left-arrow @click-left="$router.back()" />
    <!-- /导航栏 -->

    <!-- 登录表单 -->
    <van-form @submit="onSubmit" ref="userRormRef">
      <van-field
        type="number"
        maxlength="11"
        :rules="userFormRules.mobile"
        v-model="user.mobile"
        name="mobile"
        placeholder="请输入手机号"
      >
        <i slot="left-icon" class="iconfont iconshouji"></i>
      </van-field>
      <van-field
        v-model="user.code"
        :rules="userFormRules.code"
        type="number"
        maxlength="6"
        name="code"
        placeholder="请输入验证码"
      >
        <i slot="left-icon" class="iconfont iconyanzhengma"></i>
        <template #button>
          <van-count-down
            @finish="isCountDownShow=false"
            v-if="isCountDownShow == true"
            :time="1000 * 5"
            format="ss s"
          />
          <van-button
            v-else
            native-type="button"
            class="send-sms-btn"
            round
            size="small"
            type="default"
            @click="getCode"
          >获取验证码</van-button>
        </template>
      </van-field>
      <div class="login-btn-wrap">
        <van-button class="login-btn" block type="info" native-type="submit">登录</van-button>
      </div>
    </van-form>
    <!-- /登录表单 -->
  </div>
</template>

<script>
import { login, sendSms } from '@/api/user'
export default {
  name: 'LoginIndex',
  components: {},
  props: {},
  data() {
    return {
      user: {
        mobile: '18356957208', // 手机号
        code: '246810' // 验证码
      },
      // 验证规则区域
      userFormRules: {
        mobile: [
          { required: true, message: '手机号不能为空' },
          { pattern: /^1[3|5|7|8]\d{9}$/, message: '手机号格式错误' }
        ],
        code: [
          { required: true, message: '验证码不能为空' },
          {
            pattern: /^\d{6}$/,
            message: '验证码格式错误'
          }
        ]
      },
      isCountDownShow: false
    }
  },
  computed: {},
  watch: {},
  created() {},
  mounted() {},
  methods: {
    async onSubmit() {
      //  1.获取表单数据
      const user = this.user
      //  2.表单验证
      this.$toast.loading({
        message: '登录中...',
        forbidClick: true, // 禁用背景点击
        duration: 0 // 持续时间
      })
      // 3.提交表单请求
      try {
        const { data: res } = await login(user)
        console.log(res)
        this.$store.commit('setUser', res.data)
        this.$router.back()
        this.$toast.success('登陆成功')
      } catch (err) {
        console.log(err.response)
        if (err.response.status === 400) {
          this.$toast.fail('手机号或者验证码错误')
        } else {
          this.$toast.fail('登陆失败,请稍后再试')
        }
      }
    },
    // 获取验证码
    async getCode() {
      try {
        // 校验手机号
        await this.$refs.userRormRef.validate('mobile')
      } catch (err) {
        return console.log(err)
      }
      // 倒计时
      this.isCountDownShow = true
      // 请求发送验证码
      try {
        await sendSms(this.user.mobile)
        this.$toast('发送成功')
      } catch (err) {
        // 发送失败
        this.isCountDownShow = false
        if (err.response.status === 429) {
          this.$toast('发送太频繁,请稍后再试')
        } else {
          this.$toast('发送失败,请稍后再试')
        }
      }
    }
  }
}
</script>

<style scoped lang="less">
.login-container {
  .iconfont {
    font-size: 37px;
  }

  .send-sms-btn {
    // width: 152px;
    height: 46px;
    line-height: 46px;
    background-color: #ededed;

    .van-button__text {
      font-size: 22px;
      color: #666;
    }
  }

  .login-btn-wrap {
    padding: 53px 33px;
    .login-btn {
      background-color: #6db4fb;
      border: none;
    }
  }
}
</style>
